<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>.enter按键修饰符</title>
</head>
<body>
    <script src="../js/vue.js"></script>
    <div id="app">
      <input type="text" v-on:keyup.enter="submitBtn">
    </div>
     
    <script>
    var vm = new Vue({
        el:"#app",  
        data: {},
        methods: {
            submitBtn(){
                console.log('点击表单')
            }
        } 
    }) 
    </script>
</body>
</html>